Zircon refractory brick is a reliable partner for long-term and efficient operation of kilns. If you encounter problems such as rapid erosion, frequent maintenance or low product yield when using common refractory bricks, you may need to replace them with higher-grade refractory bricks. Zircon refractory bricks use high-purity zircon sand as raw material, which results in significantly improved performance. Especially in the acidic atmosphere or other harsh working environments of high-temperature kilns, you can use zircon bricks as kiln linings can ensure stable operation.
Zircon Refractory Brick for Sale
Refractoriness
1550-1650℃
Bulk Density
2.7-3.7g/cm3
Cold Compressive Strength
≥100 MPa
Apparent Porosity
≤17-22%
Parameter of KERUI Zircon Refractory Brick
When selecting refractory firebricks, composition, refractoriness and mechanical strength clearly reflect product quality. To meet the working conditions of different customers, several different series of zircon brick are available for your selection. Below are the standard parameters for commonly supplied models from the KERUI factory (can be adjusted according to your factory’s data).
| Item | Dense Zircon Brick | Zircon Brick | Zirconium-corundum Brick | Zirconium-mullite Brick | Semi-zircon brick |
| ZrO2, % | ≥65 | ≥60 | ≥30 | ≥18 | ≥15-20 |
| Al2O3, % | / | / | ≥45 | ≥55 | ≥50-60 |
| SiO2, % | / | ≤38 | ≤25 | ≤25 | ≤20 |
| Fe2O3, % | ≤0.3 | ≤0.5 | ≤0.5 | 1.2 | 1.2 |
| Apparent Porosity, % | ≤18 | ≤22 | ≤20 | ≤17 | ≤20 |
| Bulk Density, g/cm3 | ≥3.7 | ≥3.5 | ≥3.2 | ≥2.7 | ≥2.7 |
| Cold Compressive Strength, MPa | ≥100 | ≥100 | ≥100 | ≥100 | ≥100 |
| Refractoriness Under Load, °C | ≥1650 | ≥1620 | ≥1650 | ≥1650 | 1550 |
Series and Comparison of Kerui Zircon Bricks for Sale
Zircon Bricks
Main Content: 60%-65% ZrO2, 38% SiO2;
Application: High chemical stability, low thermal expansion, and resistance to molten glass corrosion.
Zircon Corundum Bricks
Main Content: 45% Al2O3, 30% ZrO2, 25%SiO2;
Application: Extremely strong resistance to molten glass erosion and high high-temperature strength
Zircon Mullite Brick
Main Content: 55% Al2O3, 25%SiO2, 18% ZrO2;
Application: Highly resistant to thermal shock, excellent structural strength, and more affordable.
Enhanced Performance of Kerui Zirconia Brick
High Temperature Stability
Because of its ZrO2 + Al2O3 composite structure, the load softening temperature of KERUI refractory bricks can reach over 1600℃. Therefore, customers can consider using these refractory bricks in long-term high-load areas such as kiln arches and kiln openings.
Enhanced Erosion Resistance
The high quality ZrO2 can against acidic and neutral slags effectively, which significantly slows down the erosion rate. For glass, ceramic and gas-fired kiln users, zirconia acid proof bricks can use for longer time.
Improved Thermal Shock Resistance
In operating conditions with frequent temperature fluctuations, the biggest concern is refractory brick cracking or spalling. However, zircon bricks do not present this problem, especially in ceramic kilns and shuttle kilns.
Stronger Resistance to Penetration
These zircon bricks resist the erosion of chemical liquids and gases, thus protecting the overall structure of the kiln. The low impurity content creates a dense structure and an effective barrier.
Bebefits of Zircon Refractory Brick for Customers
1. More Stable Furnaces
Zircon bricks maintain excellent structural strength and deformation stability even at high temperatures of 1400–1650℃. For customers, this stability not only reduces the risk of localized furnace collapse and dome deformation, but also makes the entire production line operation more controllable, thus avoiding chain shutdowns caused by furnace lining problems.
2. Lower Waste
Molten glass, slag, dust, and high-temperature airflow constantly erode the furnace lining. In actual operation, zircon significantly reduces the rate at which the furnace lining is eroded, pulverized, or peels off. This fundamentally reduces material consumption and replacement losses. In the long run, using Kerui Refractory zircon bricks saves significant maintenance costs.
3. Longer Service Life
Downtime costs during production are very high. The superior performance of zircon bricks makes them less prone to cracking, chipping and premature failure due to thermal stress during long-term operation. Customers often notice a significant extension in maintenance cycles. Many furnaces have gone from shutting down every six months to once a year or even longer.
4. Higher Output
Kiln output is closely related to the integrity of the kiln lining. Zircon bricks have a dense structure and low thermal expansion, allowing them to maintain their shape at high temperatures, providing a more uniform and stable thermal environment for the kiln. For customers, this means more consistent product firing quality. Therefore, your kiln can achieve higher output than others with the same energy consumption.
Applications of Zircon Refractory Brick
- Ladle linings in the metallurgical industry;
- Glass contact sections in alkali-free or low-alkali glass furnaces;
- Neutral bricks and inclined bricks in soda-lime glass furnaces;
- Paving, padding, trough bricks, and sidewalls of glass fiber furnaces and floating glass tanks;
- The upper part of the flame space or areas subject to frequent thermal shock in industrial glass furnaces, as well as the lining;
- The transition area between silica bricks and fused zirconia-corundum bricks or fused zirconia-corundum bricks at the furnace top;
- The second layer at the bottom of the furnace and its backing, etc.
Zircon Refractory Brick Factory – Kerui Refractory
20+ Years of Experience
KERUI is located in Xinmi City, Henan Province, a renowned refractory industry zone in China. This region boasts abundant and high-quality core raw material resources. For over 20 years, we have adhered to strict raw material selection standards and mature production processes, providing global customers with stable performance and longer lifespan zircon bricks and other refractory products.
9000㎡ Production Base
KERUI possesses a 9000 square meter modern factory area, easily meeting the continuous supply needs of large-scale and long-term projects. To provide customers with true factory-direct pricing advantages, KERUI insists on self-production and direct supply, eliminating intermediary costs. For customers requiring short lead times or large-volume orders, we can ensure rapid delivery without sacrificing quality.
2 Newly Upgraded Automated Production Lines
In 2024, KERUI upgraded 2 fully automated tunnel kiln production lines. So we are confident in providing higher daily output, stricter temperature control curves and more stable firing quality. Especially for kiln structures with stringent requirements, KERUI zircon bricks exhibit minimal quality tolerance, contributing to project stability.
ISO/CE/SGS Certifications & Multiple Patents
With one invention patent and over 20 utility model patents, we are not only a manufacturer but also an innovator in high-temperature material solutions. Furthermore, we have obtained international system certifications such as ISO, CE and SGS, giving customers greater confidence in their procurement, smoother project reviews, and a more competitive edge in bidding.
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